Elthus T&L

Ballast bed

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▪ Maximize spring effect by applying spring clip method

▪ Securing the elasticity of gravel, reducing the impact load, and reducing the noise / vibration

▪ Applicable rail: 60E1 Rail

▪ Satisfied performance requirement of KRNA(Korea rail network authority), standard specification KRSA-1001-RO

▪ Shape and Features

- Provides uniform clamping force with shoulder and clip

▪ Constructability

- Regardless of the ability of the worker, it is possible to obtain uniform power at all times
- Reduce work time and input manpower

▪ Excellent electrical insulation, no need for additional electrical insulation measures

▪ Insulator

- Material : Thermostable high viscosity material(NY66)

- Mechanical properties fit to elastic displacement of NR pad
(Tensile 83.4MPa, Elongation - More than 80%)

- Tensile load test result of finished product: 9.5kN, based on=3 (Acceptance criterion: 4.6 kN or more)

▪ Rail pad(Natural Rubber material)

- Higher elasticity (80~120kN/mm) than EVA or TPU materials pads applied for general railroad

- Ensure the long life cycle of track and low maintenance cost

Category	EVA	TPU	NR
Type
Thickness	5mm	5mm	10.25mm
Life Cycle	3~7 Years	7~12 Years	13.5 Years
Static Stiffness	No criteria	No criteria	80~120kN/mm
Domestic reference	Conventional main line, Metros, etc.	Conventional main line, Metros, etc.	Seoul-Busan, Seoul-Gwangju highspeed Line, etc.